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Within the body of the table and in column headings, units of measure and numbers normally spelled out may be abbreviated for space considerations (see , Abbreviations, Units of Measure; , Units of Measure; and , Numbers and Percentages). However, spelled-out words should not be combined with abbreviations for units of measure. For example, “First Week” or “1st wk” or “Week 1” may be used as a column heading, but not “First wk.” Abbreviations or acronyms should be explained in a footnote (see , Table Components, Footnotes). |

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